| Project/Area Number |
26462141
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Respiratory surgery
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| Research Institution | Kawasaki Medical School |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
世良 貴史 岡山大学, 自然科学研究科, 教授 (10362443)
深澤 拓也 川崎医科大学, 医学部, 准教授 (20379845)
山辻 知樹 川崎医科大学, 医学部, 准教授 (40379730)
高岡 宗徳 川崎医科大学, 医学部, 講師 (50548568)
羽井佐 実 川崎医科大学, 医学部, 准教授 (70322229)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 肺扁平上皮癌 / Sox2 / 人口転写因子 / 肺外科 / 分子標的治療 |
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| Outline of Final Research Achievements |
Sox2 was identified as a lineage specific oncogene, recurrently amplified in lung and esophageal squamous cell carcinoma (SCC). In this study, we have developed a zinc finger based artificial transcription factor (ATF) to suppress Sox2 expression in cancer cells and termed the system ATF/Sox2. A transient transfection reporter assay demonstrated that ATF/Sox2 repressed Sox2 transcriptional activity in Sox2 expressing lung and esophageal SCC cells. A recombinant adenoviral vector: Ad-ATF/Sox2 that expresses ATF/Sox2 suppressed Sox2 at the mRNA and protein levels in lung and esophageal SCC cells. Importantly, in these cells, Ad-ATF/Sox2 decreased cell proliferation and colony formation. Moreover, Ad-ATF/SOX2 significantly inhibited tumor growth in a lung SCC xenograft mouse model. These results indicate that Sox2 silencing by ATF/ Sox2 could lead to the development of effective molecular-targeted therapies for lung and esophageal SCC.
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